Boring-machine



(No Model.)

J. HARRIS guru l min-imm 4 Sheets-Sheet 1.

BORING MACHINE.

Patented Apr. 19, 1892.

(No Model.) 4 Sheets-Sheet '2.,

J. HARRIS.

, BORING MACHINE. No. 473,153. A Patented Apr. 19, 1892.

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(No Model.)

J HARRIS BORING MACHINE.

Patented Apr. 19, 1892.

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J. HARRIS.

' BORING MACHINE.

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@Ntra ATENT OFFICE.

JOHN' HARRIS, OF CHICAGO, ILLINOIS..

BORING-MACHINE.

SPECIFICATION forming part of Letters 'Patent No. 473,153, dated April 19, 1892. Application filed December 12, 1890. Serial No. 374.428. (No model.)

To all whom, t may 007/0067771,.-

Be it known that I, JOHN HARRIS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Boring-Machines, of which the following is a specification.

My invention relates to a construction of a boring-machine `involving a gang or series of power-driven bits for boring holes in long pieces of timber and of particular service in boring bolt-holes in timbers to be used in the construction of cars and bridges.

The more prominent objects of my invention are to provide aquick-acting, highly-efficient, and convenient construction of boringlnachine; to facilitate the operation of boring a series of holes in a long piece of timber; to permit all of the bits to operate simultaneously, and thereby permit a set of holes to be bored in less time than could be done by operatingthe bits successively; to provide for a wide and varied range of lateral adjustment in position on the part of the bits, so as to permit them to bore along different lines in the work, and, further, to so adjust them for boring a set of holes in one piece of Work that they shall be in readiness for boring sets of corresponding]y-positioned holes in succeeding pieces of work; to permit the bits to be run at a high rate of speed and at the same time prevent them from fiying out asaresult of some slight untrue action and centrifugal force, and to provide certain novel and improved details, all serving to increase the general efficiency of boring-machines.

To the attainment of the foregoing and other useful ends my invention consists in matters hereinafter set forth.

In a boring-machine characterized by the several features of my invention I provide a set of power-driven bit-spindles and a set of j universally-adjustable carriers for the same. The bit-spindles are controlled as to their boring positions by their respectively-allotted carriers, but are free to rise and fall independently of the same. lThe carriers for the bit-spindles are adjustable independently of one another and are each capable of a compound or universal adjustment lateral to the axis of its allotted bit-spindle, so that a single attendant may in a short time set the bitspindles for boring at desired pointsin a piece of timber. Prominent advantages involved in such construction are readiness of action, quick adjustment, the economical employment of a single attendant for each machine, avoidance of any and all necessity for the slow operation of successively boring the holes in a piece of timber, and hence the provision of means whereby all of the holes in apiece of timber can be bored by a set of bits all working at the same time, a wide and Varied range of adjustment on the part of the bits, and various other useful ends. I also provide in connection with each bit a guide arranged for steadying the bit at a point near the work. By such arrangement I can drive the bit at a higher rate of speed than heretofore, it being a Well-known fact that in boring-machines constructed prior to my invention the slightest initial Wabble of a rapidly-revolving bit will in a brief space of time cause it to swing out, so as to endanger the Workmen.

In the accompanying drawings, Figure l represents in front elevation a boring-machine embodying my invention. Fig. 2 is a rear elevation, and Fig. 3 an end elevation,of said machine. Fig. 4 is a transverse section of the machine on a Vertical plane through one of the adjustable carriers. Fig. 5 is a plan of a portion of the frame-top and a couple of vibratory adjustable carrier-guides and spindle-carriers, the bit-spindles CI and steady-rods 23 being in cross-section on line 5 5 in Fig. 8. Fig. 6 represents a section of one of the guides for a bit-spindle carrier in perspective, it being observed that Figs. 5 and G are on a scale somewhat larger than the scale of the preceding figures. Fig. '7 is a detail sectional view of the guide.

The upright portion 1 of the main frameA has its upperportion adapted to provide a suitably-elevated bed or frame-top 2, whereon I arrange a series of universally-adjustable carriers B for the bits and certain adj uncts hereinafter described. The bits Care power-driven and are arranged in series in front Iof the said upright portion 1 of the main frame. As a means for driving the bits they are belt-connected with and operated from driving-pulleys 3, arranged in se- IOO tion, and hence by adjusting these carriers the hits can be set so as to bore in a piece of timber a series of holes closer togetheror farther apart, at equal or varying distances, and either at regular or irregular intervals along a right line or along differentlines, as`

may be desired. As a simple and convenient Way of attaining such individual compound or universal adjustments on the part of said carriers, each carrier may be said to comprise an oblong slide 11, which is arranged for adjustment along a vibratory gu'ide or gnideway 4 The vibratory adjustable guides 4 bear upon and are arrangedtransversely to the length of the frame-top 2 and are pivotally held thereon by pivots 6, which engage said vibratory guides at their rear ends, as best illustrated in Fig. 5, it being also observed that in Fig. G I have shown one of said vibratory guides provided at its rear end with a hole 7 for its allotted pivot. In connection with the vibratory guides 4 Iprovide along the front edge of the frame-top 2 a series of ways S, (see Fig. 5,) which are formed on curves corresponding with the arcs in which the forward ends of the vibratory guides 4 can swing, and provide said vibratory guides with inclined lips 9, corresponding with and engaging the ways S.

The vibratory guides 4 can be held in their respective adjustments upon the frame top by any suitable locking device-as, for example, by set-screws 10. Each adjustable carrier B has its slide portion 11 applied for adjustment along and independently of its allotted vibratory guide 4, and to such end the slides 11 are desirably connected with the vibratory guides 4 by means of dovetailed or other suitable ways 12, formed longitudinally along said vibratory guides 4.

As a means for adjusting the slides 11 independently of the vibratory guides 4 I provide adj listing-screws 13, having a hand-wheel 14, by which they can be operated.

As herein illustrated, each slide 11 is provided at its forward end with a bearing 15 for its allotted adjusting-screw 13, which is arranged to extend back and engage in a bearing 1G on the vibratory guide 4. W'hile these adj Listing-screws serve to lock the slides ll upon their respectively-allotted vibratory guides 4, said screws can be operated so as to adjust the slides 11 independently of said vibratory guides 4, and hence I can attain a universal lateral adjustment of each vertically-arranged bit. The bit-spindles are arranged at the forward ends of the adjustable slides 11 and extend through bearing portions 1S on the forward ends of the slides 11, it being observed that each carrier B practically comprises a slide 11, applied for adjustment By the foregoing-described arrangement` each bit can be shifted laterally as a result of the horizontal swing of its carrier 1n unison with its allotted vibrator guide 4, and

also shifted laterally as a result of the adjustment of its slide or sliding carrier along said vibratory guide. By swinging anyr one of the vibratory guides 4 its allotted slide l1 will of course move with it, and thereby move the bit in the arc of the circle, and by adjusting the slide 11 independently of the vibratory guide 4 the radius of said arc can be varied, or the adjustment of said section can be such as to practically shift the bit along a right line or along a reverse curve. It will be obvious, therefore, from the foregoing that each bit is capable of a wide range of lateral adjustment and that it can be shifted laterally in any desired direction with reference to the point whereat it is to bore a hole in a piece of timber supported below the bits, and that having set the bits with reference to a series of proposed bolt-holes in one piece of timber, they will also be in position for boring corresponding holes in succeeding pieces. ly way of further illustration l have herein shown a piece of timber D, arranged upon a table E below the set ot' bits, and while the bits are shown in position for boring a series of holes at equal distances apart along a line running centrally and longitudinally along the timber, it is evident that the bits can be adjusted at varying distances apart and that they can also be adj usted so as to bore at various points between said line and opposite sides of the timber.

Each adjustable slide 11 is desirably provided with a pair of bearing portions 18 for a bit stem or spindle, so as to steady the same and permit the provision of a spindle-pulley F between each pair of such bearing portions. The spindle-pulleys F are thus carried by the adjustable carriers, and are feathered upon their respectively-allotted bit-spindles, so that while the bits shall revolve with the pulleys they can slide through the same, and hence drop and rise in accordance with requirements.

The spindle-pulleys F are connected with and operated from the driving-pulleys 3 by belts 19, which pass over guide-pulleys 20 on the vibratory adjustable guides. These guidepulleys are arranged over the pivotal centers about which the vibratory adj ustable guides have their swinging adjustment, and to such end I provide the vibratory guides 4 with bearings 21 for the axles of the guide-pulleys 2O and arrange said bearings on the rear ends of said vibratory guides 4, so as to place the guide-pulleys over the points whereat said vibratory guides are pivoted.

The foregoing arrangement of the guide- IIO pulleys 2O serves to maintain a uniform distance between each spindle-pulley and its allotted guide-pulley so far as the swing of the adjustable slide or sliding carrier and vibratory guide, taken together as a whole, about pivot 6 is concerned; but in order to provide for the variation of distance between said two pulleys and the necessary variation in length of belting between the spindle-pulley and its driving-pulley as an incident to the adjustment of slide 1l independently of its allotted vibratory guide 4 I provide, in connect-ion with each belt, an automatically-adjustable tightener-sheave G, which can be controlled either by a spring or weight, but preferably by a weight 22. I also provide a separate belt and driving-pulley for each two bits, as best shown in Fig. 2, wherein each belt passes from a driving-pulley to two spindle-p ulleys, and from the latter to a tightenersheave, which occupies a middle position relatively to the two spindle-pulleys, it being observed that with such arrangement the two belt-spindle pulleys F pass over guide-pulleys 20, respectively allotted to one and the other of said supports. Each universally-adjustable carrier B also carries a device for raising and lowering itsallotted bit. As a desirable construction of raising and lowering device for the purpose aforesaid, I provide each carrier ll with an upright steadyrod 23, and arrange upon such rod a vertically-sliding box or bearing 24, which is connected with a bit-spindle and subject to a balance-weight 25. The box or bearing 24 is provided with or connected with a box or bearing 26,which is adjustably held upon the bitspindle and provided with an arm 27, arranged to project forwardly at the front of the machine. The arms 27 are provided with pendent links or cords 28, having handles 29, and the balance-weights 25 are adj ustably held upon vertically-swinging arms 30, which are pivoted to the boxes or bearings 24. The arms are also pivoted upon swinging fulcrum rods or links 31, which latter are arranged upon the guide-sections ll.

In order to lower any one of the bits, the

, attendant by exerting a downpull on one of the handles 29 can draw down the bit, which will feed itself as soon as it attains a hold in the wood. When a bit is thus lowered, its allotted bearing 24 will slide downwardly, and during such movement the fulcrum 30 for the weighted arm allotted to such bearing will swing and accommodate itself to the position of the weighted arm.

As a means for so steadying the bits that they can be driven at a high rate of speed, I provide each universally-adjustable bit-spindle carrier with a guide H, which is suspended from and arranged below said bearing to position it as a guide for the threaded portion of the bit at a point just above the work. These guides II can be made adjustable in height in any convenient way-as, for example, they can be adjustably attached to rods 32, arranged to drop from the universally-adjustable carriers 1l, or the rods can be adj ustably attached to said carriers.

As amatter of furtherimprovement, I form each Vguide II by a sleeve or bushing 33, which is removably applied to a block or bearing 34 and locked therein by a set-screw 35 or other suitable locking device. By this lastdeseribed construction I can provide bushings having differently-sized bores for different sizes of bits,and hence readily remove one bushing or guide proper 33 and replace it by another when necessary.

The table E is arranged in front of the upright portion l of the main frame, and is` preferablyprovided with bed-rolls 36 for supporting the work and clamps 37 for holding the same. The table can be made so that it can be adjusted both horizontally and vertically. Thus, for example, the sides 38 of the table can be arranged to slide on ways 39, set transversely to the line of bits, and in this connection I may employany suitable means for adjusting the table. It is also obvious that I can so support said ways that they can be raised and lowered.

TvVhat I claim as my invention is l. A boring-machine comprising a gang of lbit-spindles arranged in series for boring valong a piece of work and separately supported for universal lateral adjustment independently of one another, a set of carriers whereon the bit-spindles are respectively supported and operative to permit their respectively-'allotted bits to bore into the work, and a set of independently-swinging vibratory adjustable guides for the carriers arranged in series side by side and each pivotally held at one of its ends, the carriers being applied for adjustment along the guides in directions directly from and toward the pivoted ends of their respectively-allotted guides, and the guidesbeing pivoted so that they can be swung into and out of parallelism with one another, substantially as and for purpose described.

2. A boring-machine comprising a gang of bit-spindles arranged in series for boring along a piece of work and separately supported for universal lateral adjustment independently of one another, a set of carriers whereon the bitspindles are respectively supported and operative to permit their respectively-allotted bits to bore into the work, a set of vibratory guides for the carriers arranged in series side by side and each pivotally held at one of its ends, so as to permit said guides to be swung into and out of parallelism with one another, and belt-pulleys supported upon the pivoted end portions of the vibratory guides at points over the pivotal centers about which the guides are severally arranged to swing, the carriers being adjustable along the vibratory guides in directions radial to said pivotal centers, so as to adjust the bits along lines in alignment with the guides and radial to the centers over IOO IIS

which the belt-pulleys are arranged, substantially as and for the purpose set forth.

3. A boring-machine comprising a gang of bit-spindles arranged in series 'for boring along a piece of work and separately supported for universal lateral adjustment independently of one another, a set of carriers whereon the bit-spindles are respectively supported and operative to permit their respectively-allotted bits to bore into the work, supports for advancing and retracting the bit-spindles relatively to the work arranged upon theearriers, and a set of independentlyswinging vibratory adjustable guides, along which the carriers for the bit-spindles are arranged to slide, substantially as and for the purpose set forth.

4. The combination, in a boring-machine,

of a set of bit-spindles, a series of vibratory guides, a set oi' sliding carriers for the bitspindles applied for adjustment along the vibratory guides and provided with bearings for the bit-spindles, and a series of guides 8 for the free ends of the vibrator i guides, substantially as described. 5. The combination, in a boring-machine, of a. bit-spindle, a vibratory guide, a sliding carrier for the bit-spindle applied for adjustment along the vibratory guide and provided with a bearing for the bit-spindle, and a weighted arm supported upon said slide and connected with the bit-spindle, substantially as described. i

6. rlhe combination, in a boring-machine, of a bit-spindle, a vibratory guide, a sliding carrier for the bit-spindle applied for adjustment along the vibratory guide and provided with a bearing for the bit-spindle, a steady rod 23, arranged upon the sliding carrier, and a Weighted swinging arm connected with the bit-spindle through the medium of a bearing arranged to slide upon the steady-rod, substantially as described.

'7. In a boring-machine, a gang of bit-spindles operative for boring purposes and supported for universal lateraladjustment independently of one another, a set ot' vibratory guides et, arranged side by side upon a bed 2 and pivoted at their rearcnds at the rear side of the bed, carriers B for the bit-spindles arranged for adjustment along said guides, adjusting-screws 13 for adjusting the carriers along the guides, and suitable means 'for locking the vibratory guides in their respective adjustments upon the bed, substantially as described. u

S. In a boring-machine, a gang of bit-spindles supported for universal lateral adjustment independently of one another, a set of separately-ad j ustable carriers for the bit-spi ndles, a set ot vibratory guides for the carriers arranged in series side by side and each pivoted at one end, belt-pulleys 20, supported upon the pivoted ends of vibratory guides, driving-belts 1), passing over the pulleys on the vibratory guides and each arranged to drive two bit-spindles, and automatically-adjustable tightener-sheaves G, applied to the belts, substantially as described.

t). Ina boring-machine, a gang oi bit-spindles supported for independent lateral adjustment, a set of separately-ad j ustable guidebearings for the bit-spindlesarranged for adjustment laterally and independently of one another, so as to respectively position the same with reference to the points whereat the bits are to bore into the work, and guides I-I for the bits respectively appended to one and another of the guide-bearings for the bit-spindles, so as to respectively partake ot' the independent individual adjustments ofthe same and severally formed and positioned so.as to provide guide-bores for the threaded portions of the bit-spindles at points close to the Work and respectively in alignment with the bitspindle guides, and thereby guide the bits at such points and prevent them from wabbling when rotated at high rates of speed, substantially as described.

l0. The combination, in a boring-machine, of a bit-spindle and bit, a guide-bearing for the bit-spindle, and a guide 1I for the threaded portion oi the bit appended to the guide-bearing for the bit-spindle and eomprisinga tubular bushing 33, removably held within aholdcr Si, which is attached to the carrier, whereby bushings having differently-sized bores can be substituted one for another with reference to the size of bit employed, substantially as described.

1l. In a boring-machine, a guide-bearing for the bit-spindle supported for lateral adjustment, so as to permit the bit to bore at ditferent points in the work, and a guide for the bit proper arranged in align ment with the adjustable guide-bearing for the bit-spindle and held in rigid connection therewith, substantially as set forth, so as to maintain such alignment and insure the true Working of the bit, the said guide for the bit being in position relatively to the guide-bearing for the bitspindle to guide the bitadjaeent to the work, and thereby permit the bit to be driven at a high rate of speed without wabbling.

l2. In a boring-machine, a guide-bearing for the bit-spindle provided with an arm and a guide-bearing t'or the bit proper arranged upon said arm and held in alignment With said guide-bearing at a point to guide thebit close to the work, the connection between the two guides being adjustable to permit the guide for the bit to be adjusted toward and away from the guide-bearing for the bit-spindle in accordance with the position oi' the work,sub stantially as and for the purpose described.

JOHN HARRIS.

Vitnesses:

CHAs. G. PAGE, HARRY Cons KENNEDY.

IOO 

